Since im not attending MMS this year, I am stuck with watching the keynotes and watching twitter, so I still manage to get the latest news 
Microsoft has today released its System Center 2012 products worldwide.
And has also released what versions will come of Windows 8.
Microsoft has seen that having to many versions of windows available is confusing for the customer, so it stuck with the basics.
Windows 8 ,Windows 8 Pro, Windows 8 Enterprise and Windows RT (Which is Windows for ARM)
As you can see from the feature list here, http://windowsteamblog.com/windows/b/bloggingwindows/archive/2012/04/16/announcing-the-windows-8-editions.aspx
Windows RT does not support Domain join (and x86/64 bits software) and therefore does not support group policies and such. Which I think is a bit disappointing, but how else can Microsoft compete with other tablets in the enterprise marked on speed, if their tablet needs 5 min to grind a bunch of policies, and other scripts that need to run.
But I think that Microsoft’s strategy will be to implement Windows RT only features in the new ActiveSync protocol that most likely will come with Exchange 2015 (More info coming in September) Or that SCCM comes with enhanced capabilities with managing Windows RT.
Another thing that Microsoft revealed was that Windows 8 Server is now named Windows Server 2012 ( no surprises there )